Defining gene-by-environment interactions using multiplex single-cell genomics

使用多重单细胞基因组学定义基因与环境的相互作用

基本信息

批准号：
10842099
负责人：
Jose Luis McFaline-Figueroa
金额：
$ 7.46万
依托单位：
COLUMBIA UNIV NEW YORK MORNINGSIDE
依托单位国家：
美国
项目类别：
财政年份：
2021
资助国家：
美国
起止时间：
2021-08-24 至 2026-06-30
项目状态：
未结题

项目摘要

PROJECT SUMMARY The proposed research program aims to develop systems for the multiplex assessment of the effect of genetic perturbation on the response of cells to exogenous and endogenous exposures at the resolution of individual cells . Specifically, we will develop a flexible and scalable in vitro platform for high-throughput single-cell gene- by-environment interaction screens that couples CRISPR-based single-cell pooled genetic screens to a “nuclear hashing”-based sample multiplexing strategy and a single-cell genomic readout. This platform will allow for the simultaneous molecular description of 1,000s-10,000s of unique conditions (i.e. gene and exposure combinations) at the resolution of individual cell types and cell states. In addition, we propose to develop a set of tools based on heterologous viral receptor expression for the in situ and cell-type specific delivery of CRISPR- based genetic perturbations in a manner compatible with single-cell RNA-seq. We highlight the versatility and generalizability of our approach across three applications of our technologies that aim to define gene-by- environment interactions in neurobiological disease. We propose to dissect the genetic interactions between mutations associated with Alzheimer’s disease and the transcriptional response of neural cell types to oxidative stress and peptide aggregates; to characterize the transcriptional effects associated with cell-type specific modulation of genetic modifier activity in response to mutations in genes that cause epilepsy disorder and; to determine how genes that are commonly mutated in brain cancer alter the response of murine tumors to therapies in vivo. Our goal is to arrive at clinically actionable molecular descriptions of how individual genes contribute to the response of individuals to exposure.

项目摘要拟议的研究计划旨在开发用于遗传影响的多重评估的系统细胞对单个分辨率的外源性和内源性暴露的反应的扰动细胞特别是，我们将开发一个灵活且可扩展的体外平台，用于高通量单细胞基因环境的相互作用屏幕将基于CRISPR的单细胞合并遗传筛选与“核基于哈希的样本多路复用策略和单细胞基因组读数。此平台将允许 1,000 s-10,000s独特条件的同时分子描述（即基因和暴露）组合）在单个细胞类型和细胞态的分辨率下。此外，我们建议开发一套基于异源病毒受体表达的工具，用于原位和细胞类型的crispr- 基于与单细胞RNA-seq兼容的方式基于遗传扰动。我们强调了多功能性和我们的方法在我们的技术的三种应用中的概括性，旨在定义基因神经生物学疾病中的环境相互作用。我们建议剖析遗传相互作用与阿尔茨海默氏病有关的突变以及神经元细胞类型对氧化的转录反应压力和胡椒骨料；表征与细胞类型特异性相关的转录效应响应引起癫痫疾病的基因突变的遗传修饰剂活性调节；确定通常在脑癌中突变的基因如何改变鼠肿瘤对体内疗法。我们的目标是对单个基因的临床可行的分子描述得出有助于个人对暴露的反应。